Designing markets requires both economic theory and practical intuition.
经验只是我们给错误起的名字。
The hardest decisions often yield the greatest rewards.
Keep all your things visible in a hotel room， not in drawers， and all gathered into one spot. That way you’ll never leave anything behind. If you need to have something like a charger off to the side， place a couple of other large items next to it， because you are less likely to leave 3 items behind than just one.